The HSI (Horizontal Situation Indicator) is a backup for the HSD (Horizontal Situation Display) of the MFDs and waypoints on the HUD
. The HIS provides information about course, bearing, distance to TACAN
stations, navigation fix-points, landingstrips, tankers or waypoints. This navigation aid is shown as "birdsview". The A/C is allways located at the center. The bearings and positions are based on a 360° compass. The HSI together with the INSTR MODE Switch on the INSTR-Panel
allow the selection of TACAN or NAV data.
This indicator is located in the middle of the center console
The showed panel drawing is a drawing with can be downloaded from my page Documents, plans and diagrams from the F-16